Dec 21 Dec 21 Day 20: Movement – Amtrak Rail Routes by Ridership Christian Przybylek 30 Day Map Challenge 2021
Dec 19 Dec 19 Day 19: Island(s) – Vintage Nautical Style Map of the Florida Keys Christian Przybylek 30 Day Map Challenge 2021
Dec 18 Dec 18 Day 18: Water – Using the Spilhaus World Ocean Map in a Square Projection to map the World’s Major Ocean Currents Christian Przybylek 30 Day Map Challenge 2021, Oceans